Abstract: A sensor device adapted to suit curved surfaces includes a flexible substrate, a plurality of sensing units and a plurality of connecting lines. The flexible substrate includes a plurality of connecting sections, wherein each of the plurality of connecting sections comprises at least one closed hollow region. A plurality of sensing units, disposed on the flexible substrate and arranged in an array; and a plurality of connecting lines, disposed on the flexible substrate. Each of the plurality of connecting lines is connected to two adjacent ones of the plurality of sensing units, and the plurality of connecting sections are respectively overlapped with the plurality of connecting lines.